Polishing device



im 15, 1924. Mm2

J. J. MUELLER, JR

POLISHING DEVICE Filed OCI'.. 23. 1922 TORNEYS Patented dan. 15, 1924.

irse 'STATES PATENT OFFICE.

JOHN J.'MUELLF| R, JR., 0F OTTAWA, ILLINOIS, ASSIGNOR TO SUPERIOR METALC0., 0F BETHLEHEM, PENNSYLVANIA, A CORPORATION F PENNSYLVANIA.

PoLIsHING DEVICE.

Application led October 23, 1922. Serial No. 596,288.

To all whom t may concern,

Be it known that I, JOHN J. MUEILER, J r., a citizen of the UnitedStates, and a resident of Ottawa, in the county of La Salle and State ofIllinois, have invented a new and useful Improvement in PolishingDevices, of which the following is a full, clear,

- and exact description.

E thoroughl My invention relates to improvements in polishing devices,and it consists in the combinations, constructions, and arrangementsherein described and claimed.

An object of my invention is to provide a device of the characterdescribed in which me'tal plates or strips may be cleaned and polished,in a continuous operation and by a single machine.

A further object of my invention is to provide a device of the characterdescribed which is practically automatic in o eration, and requ1res aminimum amount o care.

A further object of my invention is to provide a device of the characterdescribed in which a continuous metal strip may be cleaned, andpolished, and in which means is also provided for obviating the jammingof the strip which might occur from slight irregularities which might becaused by warpage of the strip.

A further object of my invention is to provide a device of the characterdescribed which is simple in operation, and which is practicalcommercially. Other o jects and advantages will appear in the followinspecification, and the novel features of the invention will beparticularly pointed out in the appended claims.

My' invention is illustrated in the accompan ing drawi'n forming part ofthis app ication, in w ich- Figure 1 is an enlarged sectional View ofthe polishing or ,buiing device,

Flgure 2 is an end elevation, partly in section, of the mechanismillustrated in Figure 1.

My resent invention consists in a polishing or buiing device that is fedmanually and the construction thereof is more clearly shown in Figures 1and 2.y 'From an, inspection of Figure 1 it will be seen thatthe device27 consists in `a base ortion 28 upon whicha metal drum 29 is rotatablymounted by means of uprig'hts 30 secured to the base 28. The drum 29 isformed of a plurality of transverse slots 31 in its pei within the slots31 prior ripheral wall 32.` 011e edge of the slot 31 is bent toward thecenter of the drum so that one of the plates, such as the plate 13, maybe readily inserted with its end in the slot by moving the plate alongthe peripheral wall 32 of the drum in the direction of the arrow 33. Itis in this manner that the plates 13 have their ends projected to theclamping of the lates. t

eans for elampinlg the plates 13 when the-ir ends are projected withinthe slots 31 is provided in a cam 34, one end of which is inregistration with each of the slots 31, respectively. An extension 35 ofthe cam 34 is arranged to extend inwardly toward the center of the drumand has a roller 36 rotatably mounted on its outer end. The cam 34 ispivotally mounted to the drum at 37 so that movement of the extension 35toward the center of the drum will cause the cam to closely engage thatportion of the plate 13 that is projected within the slots 31.

The plates 13 are admitted to the polishin or buiiinfr device from theright handv si e as viewed in Figure 1, and a stationary cam 38 isdisposed within the 'drum 29 immediately adjacent the right handperipheral wall of the drum. The cam 38 is a relatively short cam andserves to engage the roller 36 to cause thev adjacent cam 34 to moveaway from the peripheral wall 29 of tl1e\drum so that the plate 13 maybe readily projected into the slot 31. A@ second and relatively longstationa cam 39 is disposed within the drum 29 an is ada ted to engagethe roller 36 to cause the ro ler to move toward the center of the drumimmediately afterit has been released from engagement with the cam 38.This movement of the roller ,X36 will cause the cam 34 4to move intoclose engagement with the plate 13 and Ahold the plate against movementas shown this point a third and relatively long stationary cam 42v isdisposed withinthe drum 29'. This cam 42, as reference to Figure 1 willshow, is arranged to engage only every no j other one of the rollers 36.This is because each alternate roller 36 is disposed in a certainvertical plane, while the remaining rollers are in another verticalplane. The cams 38 and 39 are relatively broad and enUage all oftherollers, while the cam 42 on y engages every other roller.

In Figure 1 the cam 34 designated at X is in the act of being releasedfrom engagement with the adjacent plate 13, since its roller 36 is oneof 'those rollers which are arranged to engage with the cam 42. Theplate 13 is therefore free to move away' from the drum 29, which it doesof its own weightand b v virtue of a chute 43 that is actuated by a camwheel 44 of a cam 45 associated with the drum 29. The chute 43 isarranged to move toward the drum 29 at regular intervals and insynchronism with the engagement of the rollers 36 with the cam 42.

An endless belt 46 is provided and is supported upon rollers 47 on theunder side of the drum 29 so that the plates 13 will not bend downwardlyand become engaged with the base 28 or move out of engagement with thedrum when the rollers 36 become released from contact with the cam 39.v

Means for driving the polishing and grinding wheel 41 is provided in apulley wheel 5,0 on the shaft 510 upon which the grinding wheel 41 isdisposed. A drive belt 52 extends downwardly over a pulley wheel 53disposed on a shaft 54 upon which a gear 55 is carried which is in meshwith a gear V56 associated with the drum 29. A hand crank '57 is alsoprovided for the shaft 57 on which the drum 29 rota-tes.

From the foregoing description of the various parts of the device, theoperation thereof may be readily understood. With reference to Figure 1it will be seen that the plates are first placed through a buffer orpolisher 27 This device 27 which is clearly shown in Figures 1 and 2 isoperated as follows. The plates 13 are manually grasped, one end thereofprojected in the direction of the arrow33 into the adjacent slot 31 onthe drum 29. At this time, the drum 29 and the grinding, polishing, orbuiing wheel is in operation, and the drum 29 is turning in aeounterclockwise direction as viewed in Figure 1. The cam 34 adjacentthe operator at this time will be moved away from thei inner wall of thedrum 29 and the plate 13 may be easily projected in the slot. The cam 34will retain this position as long as its associate roller 36 is incontact with the stationary cam 38.

When the aforesaid roller 36 is moved with the drum 29 upwardly Jfor ashort distance, it will engage with the stationary cam 39 and the cam 34in the manner heretofore described, and will engage the plate 13 inclose contact with the inner wall of the drum 29. The plate' 13 willthen wntinue under the grinding, polishing or bufing Wheel 41 and willmake a complete revolution with the drum 29 back to its starting place.At this time, the cam 34, released from engagement with the plate 13 bymeans of its contact with the stationary cam 38 and the plate 13, may bemanually removed. A new plate will be substituted for the plate 13, andthe plate 13 will be placed in the next adjacent slot 31. With referenceto Figure 1 it will be seen that every alternate cam 34 is provided witha roller 36 which lies in a different vertical plane from the remainderof the rollers. The cam 34, toward which the plate 13 is now projectedthrough the slot 31, is one of these alternate cams which has a rollerthat engages the stationary cam 38, the stationary cam 39, and also thestationary cam 42. It should be noted at this point that the cam roller34 previously described, and to which the plate 13 is first brought intocontact, does not engage with the cam 42. When the plate 13 which hasbeen reversed, that is, its outer end has been made the inner endrelative to the drum 29 which is the point X, its awociate roller 36,which engages with the cam 42 and the cam 34, will be moved out ofengagement with the drum 29 and the chute 43, thus permitting the plate13 to be scooped up by the shaft 14 that is at this time in close engaement with the drum. The chute 43 is a apted to be moved by means of thecam wheel 44 and the cam 45 on the drum 29 toward the drum at eachalternate passing of the slots 31. In short, the device27 is soconstructed that the plates 13 may be inserted at the right hand of thedevice as viewed in Figure 1, and after passing under the grinding,polishing, or buffing wheel, will return to their starting point. Theplate 13 may then be removed, reversed, and placed in the nextsuccessive slot 31 and at this time it will not be returned to itsstarting point, but be delivered from the machine at X or fall upon onepair of con, 4

veyor belts 10.

I claim:

1. A device of the character described comprising a polishing andgrinding wheel, a rotatably mounted drum having its peripheral wallsclosely adjacent the peripheral edge of said grinding wheel, clampsassociated with said drum for clamping metal plates or the like thereto,and means assof ciated with said clamping members for releasing certainof said clamping members on a portion of the circumference of said drumas said drum is rotated, whereby certain of said plates may remain insaid clamping members for a complete revolution of Said drum and theremainder of said plates may remain in said clampin members for` acomplete revolution of sai drum.

`2. A device of the character described comprising a polishin andgrinding wheel, means for rotating tie Wheel, a drum rotatably mountedin close proximity with said grinding wheel, clamping members carried bysaid drum for clamping metal -plates or the like thereto, meansassociated with said clamping members for releasing every second one ofsaid clamping members during one-half the revolution of said drum,whereby plates may be removed from the released clamping members at willduring said one-half revolution of the drum, and other means forreleasing all of said clamping members during a portion ofthemrevolution of said drum.

JOHN J. MUELLER, Ja

